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2842411 - Query fails with a Non_Fatal at dfo_GroupBy.cxx on call to dfo_GroupBy::ReplaceShadowDFEs - SAP IQ

Symptom

  • A query containing an INSERT INTO,  followed by an UPDATE failed with a Non-Fatal IQ Internal Error Detected at dflib/dfo_GroupBy.cxx

  • A thread stack trace shows the failing sequence of the following calls
    dfo_GroupBy::ReplaceShadowDFEs
    dfo::ReplaceShadowDFEs
    dfo::ReplaceShadowDFEs
    dfo::ReplaceShadowDFEs
    dfo_GroupBy::ReplaceShadowDFEs
    dfo::ReplaceShadowDFEs
    dfo::ReplaceShadowDFEs
    dfo_GroupBy::ReplaceShadowDFEs
    dfo::ReplaceShadowDFEs
    dfo::ReplaceShadowDFEs
    opt_Driver::ApplyShadowTransform
    opt_Driver::AddParallelShadowSubtrees
  • error messages seen after the stack trace
    Exception Thrown from dflib/dfo_GroupBy.cxx:2806
    O/S Err#: 0, ErrID: 9216 (df_Exception); SQLCode: -1006000, SQLState: 'QBA00', Severity: 23
    IQ Internal error. Please report this to SAP IQ support.
  • This is a very rare occurring issue and difficult to reproduce. The failing query runs successfully when resubmitted.

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Environment

  • SAP IQ 16.1 SP03 PL06 Linux

Product

SAP IQ 16.1

Keywords

sybase, abort, crash, fail, 'dfo_GroupBy.cxx:2806', stacktrace, CR819966, CR#819966, 819966, 'non fatal', nonfatal, df_Exception, simplex, multiplex, mpx , KBA , BC-SYB-IQ , Sybase IQ , Problem

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